Still for crude bituminous materials.



C. P. PRICE. 1

STILL FOR CRUDE BITUMINOUS MATERIALS.

APPLICATION FILED DEC.3| I9I2- l lntvllted July 1b, 1918.

2 SHEETS-SHEET l.

C. P. PRICE.

STILL FOR CRUDE BITUMINOUS MATERIALS.

APPLICATION FILED DEC.3. 1912. .l Patented Ju1y16,1918.

SHEET 2.

Suva/tto@ 2 SHEETS- CHARLES l. PRICE, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO AMERICAN TAR CCNL' PANY OF MALDEN, MASSACHUSETTS, A CORPORATION F MASSACHUSETTS.

STILL FOR. CRUDEe BITUMINOUS MATERIALS.

To all 'whom t may concern: r

Be it known that I, CHARLES P. PRICE, a

` citizen of the United States, residing at is heated by heat applied tothe outer surface thereof, there is a great waste of heat.

Malden, in the county ofMiddleseX, State of Massachusetts, have invented'certain new and useful Improvements in Stills for Crude.

Bituminous Materials, of which the following is a description, reference being had to the accompanying drawing and to the 4gures of reference marked thereon..

The invention relates to new and useful improvements in stills for crude bituminous materials'such as water gas tar or coal gas tar, or any other mixtures of tar orl artiiicial oils.

In the distillation of coal tar or other crude bituminous materials where the still owing to the bad heat conducting properties of the residualv products which prevent the proper diffusion of the heat through the entire contents of the still.- Furthermore, the excessive heat required vto dehydrate the bituminous material, often results in a decomposition andthe loss of valuable prod ucts, while thel stagnation or want of diiiusion of heat gives rise to carbonization of the pitch, an accumulation of coked matter 0n the interior surfaces of the still, whichare immediately exposed to the heat,

thus deadening the same and obstructing the action of the heat. This accumulation of coked matter requires the action of the still to be suspended periodically in order that said coked material maybe removed. This' is especially true when heavy oils or -coall tar is being dehydrated.

An object of the present invention is to provide a still wherein the heat is applied to the mass throughout the interiorthereof, by heating coils. which coils are preferably so constructed that one ormore may' be re-v moved at a time for repairing or replacing, without disturbing the other coils. Y

A further! object of the invention isito provide the still witha plurality of jets of air, which jets are passed centrally through the "vertical heating coils for the purpose of causing the bituminous material to cir-c culate in and about the coils, which'brings about a much more uniform heating of the Specification of Letters Patent.

Patented July 16, 1918.

Application led December 3,1912. i Serial No. 734,771.'

provide devices for collecting the distillates which are condensed on the cover, which distillates are carried oil" by a steam ljet to the condensers therefor.

These and other objects wil-l in part be obvious, and will in part Vbe hereinafter more fully disclosed.

ln the drawings which show by way of illustration one embodiment of the inven-- tion;

Figure a still having thereto; Fig-2 is a plan cover removed;

1' is a part sectional view through my improvements applied View of thel same, with the Fig.= 3 is an enlarged detail, .showing thev manner .of sealing the cover to thebody of the' still, and the collecting of the'distillates.

In carrying out the invention, I have provided a still which consists of a body por-- `tion properly surrounded by asbestos or other insulating material, seas to retain the heat within the still. 'In this-still are placed vertlcally arranged heating coils, vthrough which steam may be passed -for heating the contents of the still. These coils are so connected to the main steam inlet pipes that one or more ofthe coils may'- be disconnected for repair, or for the purpose of substituting other coils.v

In .order .to facilitate the circulation of the bituminous material as it is being heated, I have providedl an air pipe which eX- ytends underneath each coil and is provided `with a plurality "of jets through which air maybe forced centrally through the coils. The still comprises a metal cover which is free from insulating material so that it may be kept cool for the purpose of condensing the distillates driven off from the mass 'in the still; these distillates flow/img,r (l0-Wn` tht' inner surface of the cover will collect in atrough which serves not only as a seal for the cover, but as a'means for conveying the distillates to the' condenser.l In order to o assist in drawing the distillates from the the body o f the still. Located in the still.

as herein shown, are three vertically arranged coils 3, 4 and 5. vThe coil 3 isv connected with an intake pipe 6, which lleads from a main supply pipe 7 and is controlled by a cut-out valve 8. The .discharge from the coil 3 'is' conveyed .through a pipe 9l vwhich is connected with a main outlet pipe 10 and is controlled by a valve 11. The

.that aflong handled.,wrench. may be applied thereto for turning the same.

coil 4 is connected with an intake pipe 12 which in turnj connects with the main inlet.

pipe 7, and is controlled by a hand valve 13. rlhe` coil 4 is also connected by a pipe 14 in the main outlet pipe, and is controlled by a valve 15. The coil is connected through the pipe 16 to the main pi e 7, and is controlle by ahand valve 1 also connected through a pipe 18-'to the main outlet 10, and is controlled by a valve 19. rlhese coils `serve as aheating means for the still. The steam is passed through the inlet pipe 7 and is led through the pipes 6, 12 and '17, to the various coils, `after which the steam passes through the pipes 9, 14 and 18, to the outlet pipe 10. -These coils, as clearly shown in Fi 1, are ar-..

ranged 'vertically and extendv'from a point near the bottom of the Vstill to a point Well above the center of the mass of the material in the still. The steam passing through.

the coils will therefore, be. carried in and about the interior ofthe mass being heated, and said mass will be uniformly heated.

If at any time one of the coils should break down or become unfit' for use, it maybe readily disconnected by closin the valves in the inlet and outlet 'pipes' .t er'efor, after which vit may be disconnected 'from these.

'v pipesandvremo'ved for repairing or replacl In order to further aid the heating .of

the mass, I have provided an air pi e 20, Fig. 2. This air ipe',at a point outsi e the still, is connect with three lpipes 21, 22

and 2 3-, eachof which has' a' controlling` vvalve therefor. The pipe 21 extends un- The coil 5 is 4dernea'th the coil .3 to a point centrally thereof. Radiating from the pipe 21 at the center of .the coil, as herein shown,"arefour arms 24, each of which is perforated so that jets of air may beforced up through the coil throughout a greater portion of the interior area of the coil, and 4these jets'of air will cause the material to circulate 4through* the coil and. thus 'secure a more thorough diHusio-n of the heat throu hout the mass, and a uniform1 heating o vthe lheatedto the properl temperature to drive .olf the distillates desired. valve 11 Fig. 2 is preferably so constructed'l At the upper edge of the body portion 1 of thestill, is an angle iron 25 which is secured tothe still. and is so shaped -as to 'above the still and is provided with a suitable'bracket 30 supporting pulley blocks 31 which may be usedv for raising the cover 27 from the still. v The cover is preferablypro-- vided with an opening in one side thereof, which may be closed by a door 32 whichv is 4hinged at 33 to the cover and is held'closed .by a latch 34. .structed as to practicallyl seal the This door may be s0 conopening in the cover when closed..

The distillates are, carried from the stil-l by a pipe 35 which is disposed concentrically to the center of the still and is oon'- nected to -a series of short vertical pipes 36, each of which has a funnel 37 at its upper end. The short vertical pipes 36 3 are also connected to short horizontal* pipes 38, which are secured at a point adjacent. to the upper edge of the still by suitable vnuts 39. These short horizontal pipes 38. pass through the upperl edge of the still?. and

communicate with j the trough l 26.- The pipes 36 and 38 serve asa supporting means for the circular pipe 35. An inclined pipe 40 connects with the circular pipe, and eX- -te'nds t0 a point centrally of the still and is provided with afreceiving funnel 41 at its .upper end.. An outlet pipe 42 extends froml the pipel 35 through the sides of the still,

and is connected with a pi e 43 which leads to a-Series condenser 44. he inclined section 43a connects the pipe 43 with the condenser 44. A The steam pipe l45l extends into the pipe 43 and serves as a means for. intro-- ducing` a forced jet offsteam through the pipe 43 to assist-in drawing olf thev distillatescollected inthe pipe. The second-coil condenser 46 is connected with the series condenser 44 and said second condenserv may vbe connected with 'a suitable storage vessel of anydesired character.

In the operation of my device, the crude bituminous materialV is placed in the -still and steam passed through the heating coils.

` In the preferred use of my device, this crude bituminous material is dehydrated for a sultable'period, during which time the Water contained therein and the lighter disdistillates ltherefore form a self-seal for the cover. The distillatesv will also be collected through the funnels 37 and 41 and will be drawn olf through the collecting pipe 35.

The jet of steam passing through the pipe 43, will assist indrawing ofi' lthese distillates, and will be more orless mixed therewith -as they pass to the condenser. The distillates will be collected through the funnels 37 and 41 by reason of the fact that the steam jet causes more or less of a vacuum in the pipe .43, and this aids in drawing the distillatesrinto theifunnels. -The lairpassing up through the heating coilswill'cause the mass of material to be properly agitated or to circulate so that the heat from the heating coils will be diffused throughout the entire mass and the same will be uniformly heated. l am able by this construction of still, to drive olf the distillates without the use of such excessive heat as would cause the carbonization of-the pitch, and 4an accumulation of coked material either on the interiorv surfaces of the still or about the heating coil. vThe still may be supplied with a crude bituminous material through an intake pipe 47, and the material may be drawn from the still through an outlet pipe 48.

The still herein shown, is preferablyused for the preparation of tar for ilse on roads,

and when -so used, the crude bituminous material after being dehydratedV for the period stated, is supplied with asphaltum. Anywhere from one to twenty per cent. of asphaltum is used and this may be inserted in the still in block form, through the opening in the cover closed by the door 32. o

It is obvious that the still may be used for otherp'urposes'-, and that minor changes .in the details ofconstruction.andarrangement of'parts ma'y'mbe made, wlthout departying from the spiritof. the invention asset forth in the appended claims.

Having thus described my invention,what lI claim as new and desire to secure by Letters Patent, iszl, Y

1.' A still including in combination, a body portion, -a cover therefor, a vertical coil arranged within said still through which steam may be passed for heating the material, and means for forcing )ets of air centrally. up through thev coil, for causing the material being heated to circulate throughthe coil,

2. A still including in combination a bodyl portion having a trough at its-upper edge, a cover having 'a seat in said trough whereby the distillates collecting in the trough seal the cover, means for heating the material in said still including a vertically arranged coil through which steam may be passed, and devices for forcing a plurality of jets of air upwardly vthrough the coil.

3. A still including in combination a body portion having a trough at its upper edge, a cover having a seat in said trough whereby the distillates collecting 'in the trough seal the cover, a collecting lpipe for the distillates, means for connecting said collecting pipe with said trough, a plurality of vertical pipes'leading to said` collecting pipe, and funnels supported 'by said vertical ipes. f

4. A still including in combination. avbody portion having a trough at its upper edge, a cover having a seat in said trough whereby the ldistillates collecting in the trough seal the cover, a collecting pipe for the distillates, means for connecting saidcollecting 'pipe with said trough, a plurality of vertical pipes leading to said collecting pipe,

funnels supportedjby said vertical pipes, 'j

and means for heating said still including av vertically arranged coil located lw-ithin the still, through which Vsteam'may be passed.

5. A still including in combination a body portion havinga trough at its upper edge, acover having a seat in said trough whereby thel distillates collecting in the trough seal the cover, a collecting pipe for the disl tillates, means for connecting saidV collecting pipe withs'aid trough, `a plurality of vertical" pipes4 leading vto said collecting pipe, funnels supported byv said vertical pipes, means for heating said still including a vertically arrange'd'coil located within the still, through which steam may be passed, and devices for causing a plurality of jets of air to pass upwardly through said coil. A

6. A still including in combination a body portion having a trough at its upper end, a conical-shaped cover having a flange v adapted to seat in said trough, a collecting pipe located in said still adjacent the upper edge of the body portion, pipes connecting said 4collecting pipe with said trough at points above the bottomof the trough, whereby the distiilates `in the trough will seal the cover, an outlet pipe connected with said collecting pipe, and means for forcing steam into said outlet pipe for drawing the distillates from the collecting pipe.

CHARLES ie. Peron.

Witnesses:

JOHN T. RONAN, MELVLLLE CQDEARING. 

